Improvement in combination-padlocks



-w. F. BUTTER.

Combination Pad-Locks.

Patented April 7,1874.

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WILLIAM E. BUTTER, or PHILADELPHIA", PENNSYLVANIA.

IMPROVEMENT IN COMEiNATION-PADLCK."

Specification forming part of Letters Patent No. P19528, dated April 7,1874; application filed March 17, 1874.

To all whom 'it may concern:

Be it known that I, WILLIAM F. BUTTER, of the city and county ofPhiladelphia, in the State of Pennsylvania, have invented aCombination-Lock, of which the following is a speciication:

My invention relates to a series of revolving tumblers held togetherbymeans of heads and rods, in combination with a sliding andpartially-rotating hasp or bolt having a hook, lugs, and guiding-collar,fully described hereafter. It also relates to a segmental lug` on one ofsaid heads, in combination with a segmental lug on a knob of the hasp,for limiting the rotary movement of the latter, as hereinafterdescribed.

In the accompanying drawings, Figure l is a side view of the lock. Fig.2 is a longitudinal section of the same. Fig. 3 is an end view. Fig. 4isa side view of one of the rings or tumblers A.l Figs. 5 and 6 areviews, at right angles to each other, of the hasp or bolt D. Fig. 7 isan end view of the knob 7L. Fig. 8 is an end view of the head B.

Like letters of reference in all the figures indicate the same parts.

A A A A are rings or tumblers, which iit together by means of annularrabbets b, and are firmly connected, between the heads B and B, by thescrew-rods C G1 G2. The said tumblers, one of which is represented indetail in Fig. 4, are recessed at their ends, so as to leave a plate, c,in their middle, in which is a central bore, d. A radial slot, e, isextended outward from the central bore, and lugs f project from eachside of the plate c, to form radial recesses g. D is a sliding androtating hasp or bolt inserted in the central bore d. It has a knob, IL,on one end for manipulating it, and a hook, c', at the other end forconnecting it to the article to be locked. The collar cof the rod orbolt D is used as a guide or stop for the same. When the bolt is broughtinto its locked position the hook t enters a corresponding hole in the'lugj of the head B. The bolt D is provided with lugs k 7c k k, whichare in line with the straight Vpart of the bolt and its hook t'. Theyare free to move through the slots e. On the peripheries of the rings ortumblers A, at one end, there are gures 1, 2, 3, '4, 5, and 6,corresponding to thenumber of the recesses g on one side of the plate c,and the slot e. The radial recesses, into which the lugs k may enterfreely, are merely deceptive, so as to mislead any one attempting toopen the lock. The head B has on its projection l a lug, m, extendingone-half of its diameter, and the knob h of the bolt D has a lug, a, ofone-fourth of its diameter, which engages with it on either side of thebolt when the bolt is turned around to the right or left, thus providingfor the guiding of the bolt.

The operation is as follows: The rings A A A A are so adjusted that thenumbers on the peripheries in line lwith the slots e shall come in linewith the rod C, with which the hook t' is in line. he bolt is thenpushed forward until the hook is disengaged from the lug j,

and is connected with the thing or things to be locked.` The bolt D isthen moved back into its former position, an d the hook t' brought intoconnection with the hole in the lugj, as seen in Fig. 2. When the lockis set, the person setting it, as he knows what numbers 011 the rings Ashould be in line with the rod C, turns the rings partly around to bringthe slots out ot` line. Then, if any other person should attemptv toopen the lock, in turning partly around the rings A, the lugs lo willslip into therecesses g and mislead him.

I do not confine myself to the number of rings A, nor to the number ofslots and recesses in the same, as they may be varied without departingfrom the character of the invention.

I claim as my invention l. rlhe revolving rings or tumblers A, heldtogether by means of heads B B and rods U C1 G2, in combination with thesliding and rotating hasp or bolt D, having a hook, t', lugs k, andguiding-collar a, substantially as and for the purpose described.

2. The lugm on the head B', in combination with the sliding and rotatinghasp or bolt D, having a knob, h, and lug u, for limiting the rotarymovement of the hasp or bolt, substantially as set forth.

VILLIAM F. BUTTER.

Witnesses:

'lrIoMAs J. BEWLEY, STEPHEN UsTIeK. I

